/* Blog · esquinas redondeadas en tarjetas */
.post-thumbnail,
.post-thumbnail--image,
.post-thumbnail img,
.post-thumbnail img.img-fluid {
    border-radius: 12px;
    overflow: hidden;
}
.post-thumbnail--image {
    display: block;
    transition: transform .35s ease, box-shadow .35s ease;
}
.post-thumbnail--image:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.10);
}
/* Asegurar que las imágenes encajan en el border-radius */
.post-thumbnail img {
    display: block;
    width: 100%;
    height: auto;
}